Finding the Fourth Proportional to 21,411,765.99, 29,473,560.18 and 18,480,881.63
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Solution
The fourth proportional to 21,411,765.99, 29,473,560.18 and 18,480,881.63 is: 25,439,161.68
Step by Step Solution
- Step 1: Write the proportion equation
21,411,765.99 : 29,473,560.18 = 18,480,881.63 : x - Step 2: Convert to fraction form
21,411,765.99/29,473,560.18 = 18,480,881.63/x - Step 3: Cross multiply
21,411,765.99x = 29,473,560.18 × 18,480,881.63 - Step 4: Simplify right side
21,411,765.99x = 544,697,376,974,945.38 - Step 5: Solve for x
x = 544,697,376,974,945.38/21,411,765.99 - Step 6: Final answer
x = 25,439,161.68
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.